diff --git a/.github/workflows/docker-build-self-hosted.yaml b/.github/workflows/docker-build-self-hosted.yaml
index e6f5d5b7f08..8ea00c0cc7c 100644
--- a/.github/workflows/docker-build-self-hosted.yaml
+++ b/.github/workflows/docker-build-self-hosted.yaml
@@ -10,8 +10,6 @@ on:
   push:
     tags:
       - openadkit-v*.*.*
-    branches:
-      - main
   schedule:
     - cron: 0 12 * * *
   workflow_dispatch:
@@ -48,6 +46,11 @@ jobs:
             lib_dir: aarch64
             additional-tag-suffix: -cuda
     steps:
+      - name: Check if push day
+        run: |
+          if [ $(date +'%d') -eq 01 ] || [ $(date +'%d') -eq 15 ]; then echo "IS_PUSH_DAY=true" >> $GITHUB_ENV; else echo "IS_PUSH_DAY=false" >> $GITHUB_ENV; fi
+        if: ${{ github.event_name == 'schedule' }}
+
       # https://github.com/actions/checkout/issues/211
       - name: Change permission of workspace
         run: |
@@ -89,7 +92,7 @@ jobs:
             *.cache-to=type=registry,ref=ghcr.io/${{ github.repository }}:buildcache-${{ matrix.name }},mode=max
           tag-suffix: ${{ matrix.additional-tag-suffix }}-arm64
           tag-prefix: ${{ needs.load-env.outputs.rosdistro }}
-          allow-push: true
+          allow-push: ${{ env.IS_PUSH_DAY == 'true' }}
 
       - name: Show disk space
         run: |
diff --git a/.github/workflows/docker-build.yaml b/.github/workflows/docker-build.yaml
index 595dca5ba17..b4c3043962a 100644
--- a/.github/workflows/docker-build.yaml
+++ b/.github/workflows/docker-build.yaml
@@ -10,8 +10,6 @@ on:
   push:
     tags:
       - openadkit-v*.*.*
-    branches:
-      - main
   schedule:
     - cron: 0 12 * * *
   workflow_dispatch:
@@ -48,6 +46,11 @@ jobs:
             lib_dir: x86_64
             additional-tag-suffix: -cuda
     steps:
+      - name: Check if push day
+        run: |
+          if [ $(date +'%d') -eq 01 ] || [ $(date +'%d') -eq 15 ]; then echo "IS_PUSH_DAY=true" >> $GITHUB_ENV; else echo "IS_PUSH_DAY=false" >> $GITHUB_ENV; fi
+        if: ${{ github.event_name == 'schedule' }}
+
       - name: Check out repository
         uses: actions/checkout@v4
 
@@ -84,7 +87,7 @@ jobs:
             *.cache-to=type=registry,ref=ghcr.io/${{ github.repository }}:buildcache-${{ matrix.name }},mode=max
           tag-suffix: ${{ matrix.additional-tag-suffix }}-amd64
           tag-prefix: ${{ needs.load-env.outputs.rosdistro }}
-          allow-push: true
+          allow-push: ${{ env.IS_PUSH_DAY == 'true' }}
 
       - name: Show disk space
         run: |